Agilent 53131A-010 Specs:

Agilent HP 53131A-010. The 53131A Universal Counter is designed for manufacturing test, troubleshooting, and service. This counter allows you to easily make highly reliable frequency and timing measurements. Featured are extensive in-box analysis. automatic limit testing, analog display mode, single button recall, and more. The unit's half-rack size and light weight make it well suited for both benchtop and rackmounting.